Computational models are tools for testing mechanistic theories of learning and development. Formal models allow us to instantiate theories of cognitive development in computer simulations. Model behavior can then be compared to real performance. Connectionist models, loosely based on neural information processing, have been successful in…

Revealed that 6-month-old infants are unable to access either an original memory or a reactivated memory after lengthy intervals. Despite the fact that their memory processing is more rapid during encoding and retrieval than that of infants half their age, their facility for accessing an original or reactivated memory is weaker than that of such…

Two experiments involving two sets of actions using two stimuli sets examined deferred imitation to trace changes in memory retrieval by 18- to 30-month-olds. Results indicated that target action recall with different stimuli increased as a function of age, particularly after a delay. A unique verbal label facilitated 24-month-olds' performance…

The addition of idiosyncratic features to individual members of an artificially constructed category enhanced specific item memory among 13 month olds, but not among 10 month olds. Discussion of findings focuses on their theoretical implications and the nature of the age difference. (RH)

Explored new-born babys' capacity for forming visual memories. Used an habituation procedure that accommodated individual differences by allowing each infant to control the time course of habituation trials. Found significant novelty preference, providing strong evidence that recognition memory can be reliably demonstrated from birth. (Author/JAC)

Some infants, soon after birth, are capable of storing visual information as reflected in their ability to detect and respond to change in the immediate environment. (Author)

A longitudinal study examined memory span at 5, 7, and 12 months in full-term and low-birth-weight preterm infants. Findings were similar for both groups: longer spans were more difficult, especially at younger ages, memory capacity increased over first year of life, there was marked recency effect for spans of 3 and 4 at all ages, and modest…

Studied feeding-related arousal effects on a visual recognition paired-comparison task at newborn, 1, and 4 months of age. Found that newborns and 1-month olds shifted from a familiarity preference before feeding to a novelty preference after feeding. Control-group testing confirmed that shift was not due to increased stimulus exposure. By 4…

Two studies examined the impact of temporal synchrony on infants' learning of and memory for sight-sound pairs. Findings indicated that 7-month-olds had no difficulty learning auditory-visual pairs regardless of temporal synchrony, remembering them 10 minutes later and 1 week later. Three-month-olds showed poorer learning in no-synchrony than in…

Examined contributions of cognitive processing speed, short-term memory capacity, and attention to infant visual recognition memory. Found that infants who showed better attention and faster processing had better recognition memory. Contributions of attention and processing speed were independent of one another and similar at all ages studied--5,…

Function of attention in infants is explored. Assuming (1) that infants respond differently to novel situations than to familiar ones; (2) that the infant's pattern of response is a partial reflection of the process of acquiring a perceptual memory of the stimulus, and (3) that sex differences may occur in the rate of habituation, 120 infants…